I1-1 - P2P NETWORKING OVERVIEW - CONCEPTS, CHARACTERISTICS,...

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Unformatted text preview: P2P NETWORKING OVERVIEW - CONCEPTS, CHARACTERISTICS, ADVANTAGES, DISADVANTAGES Marija Efnuseva 1 , Aristotel Tentov 2 , Igor Stojanovski 3 1 Faculty od Electrical Engineering Skopje, Karpos II bb, P.O.Box 574, 1000 Skopje , marijaef@etf.ukim.edu,mk 2 Faculty od Electrical Engineering Skopje, Karpos II bb, P.O.Box 574, 1000 Skopje , toto@etf.ukim.edu,mk 3 Komercijalna Banka AD Skopje, 1000 Skopje, igor.stojanovski@kb.com.mk Abstract During the last couple of years, Peer-to- Peer (P2P) has become a very popular term among computer users. The number of P2P applications has been thriving recently. Popularity of P2P applications facilitated the creation of P2P networks which are considered virtual networks, shaped on top of current Internet infrastructure. However, intensive usage and popularity of P2P, caused an increase in the imposed traffic over the underlying Internet. P2P traffic becomes a significant part of overall Internet traffic changing its performance characteristics. Early P2P traffic was easily identified through the well-known port numbers. Present P2P applications implement new abilities: dynamic port hopping and encrypting information which makes discovery of P2P traffic difficult. So far, only few attempts have been made to characterize and model the behavior of P2P networks and traffic [6], [9]. The popularity of P2P, as well as the small number of research studies, have been the main reasons to choose P2P as a research topic. Consequently, the key intention of the following text is to give brief overview of the main concepts, ideas, and problems behind significant Internet load due to Peer-to-Peer networking, as well as to provide directions for further research. Keywords P2P, Peer to Peer networking, Modeling 1. INTRODUCTION During the last couple of years, peer-to-peer (P2P) has become a very popular term among computer users all over the world. The number of P2P applications has really been thriving recently. This has provided the P2P users a vast set of applications with different characteristics to choose from. Proportionally, with the number of applications and users, the P2P traffic has increased, and, today, virtually flooded the Internet. The popularity of P2P applications facilitated the creation of P2P networks of connected peers . These P2P networks are considered virtual networks, since they are shaped on top of current Internet infrastructure. The peers constructing the P2P network may have different hardware and software resources (operating systems, network connectivity, and can even be running different P2P applications), but their common characteristic is the ability to act both as a client and as a server, at the same time. The absence of centralized authorities in P2P networks results in a distributed configuration of directly connected peers. Some P2P networks also have a small set of special nodes that usually handle queries [6]. The most popular application running on present P2P networks is file sharing among users. P2P networks is file sharing among users....
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This note was uploaded on 02/18/2010 for the course ITK ETF113L07 taught by Professor Popovskiborislav during the Spring '10 term at Pacific.

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I1-1 - P2P NETWORKING OVERVIEW - CONCEPTS, CHARACTERISTICS,...

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